Spraying apparatus.



No. 682,237. Patented Sept. I0, 1901.

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SPRAYING APPARATUS.

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E. 6. BROWN. SPBAYING APPARATUS.

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EDWARD 0. BROWN, OF

PATENT EEicE.

ROCHESTER, NEW YORK.

SPRAYING APPARATUS.

SEPECIFICATIQN forming part of Letters Patent N 0. 682,237, datedSeptember 10, 1901.

Application filed February 26,1900. Serial No. 6,516. (No model.)

To all whom, it may concern:

Be it known that I, EDWARD 0. BROWN, a citizen of the United States,residing at Rochester, in the county of Monroe and State of New York,have invented a certain new and useful Improvement in SprayingApparatus, (Case No. 5,) of which the following is a full, clear,concise, and exact description, reference being had to the accompanyingdrawings, forming a part of this specification.

My invention relates to spraying apparatus, and has for its objectimproved and simplified construction for a device of this kind.

By my invention I secure a compact, strong, efficient, and simplespraying mechanism by which the stored energy in the form of compressedair in the reservoir is utilized to perform the operation of spraying. Ipreferably reduce the diameter of the tank or reservoir portion andincrease the length thereof. This shape greatly increases the strengthof the end plates and also allows the tank to be easily and readilysuspended from the shoulder of the operator by a strap or other meanswhich is suitably fastened to said tank.

Another feature of my invention lies in the improved and simplifiedvalve mechanism, the check-valve at the bottom of the air-pump cylinderbeing so constructed as to be certain of action and easily assembled anddisassembled, as will hereinafter be more fully described. I preferablyutilize the handle of the air-pump as a means for removing the pump fromthe tank. This I accomplish by means of a post or projection formingpart of the pump-frame and extending through an opening in thepump-handle, a key or pin engaging a hole in said post or projection andserving to lock the handle to said pumpframe. When the pump is fastenedto the tank, said handle may also serve as a handle to the apparatus. Imay also provide a safety valve or device to guard against damage oraccident due to the overpressure in the tank.

I shall describe my invention more particularly, with reference to theaccompanying drawings, which illustrate the preferred embodiment of myinvention, and in Which Figure 1 is an elevation view of my improvedapparatus, a portion thereof being cut away to disclose thepump-cylinder. Fig. 2 is a longitudinal vertical section thereof. Fig. 3

is a bottom view of the puinpcylinder, showing the valve. Fig. 4 showsthe manner of engagement of the valve-spring with the wall of thepump-cylinder. Fig. 5 is a detail partsectional view of the check-valve,plunger, and part of the cylinder. Fig. 6 is a top view of my apparatus,the handle being cut away to show the manner of locking said handle tothe pump-frame. Fig. 7 is a sectional view of the handle and lockingdevice. Fig. 8 is a plan view of my improved safety-valve. Fig. 9 is thesame with the cap removed. Fig. 10 is a sectional View thereof.

Like characters of reference refer to like parts throughout the severalfigures.

A cylindrical pressure tank or reservoir 1 is securely fastened to abase-plate 2, preferably of convex shape,to afford strength,and to aheadpiece or cap 3, preferably arched and encircling at its center andsecurely attached thereto, an annular collar or bushing 4, said bushingbeing provided with ears 35, supporting threaded posts 36. Anotherannular collar 5 surrounds the pump-cylinder (i, being soldered orotherwise securely fastened thereto. This collar is also provided withcars 37, said ears having slots 38 adapted to engage posts 36.Thumb-screws 39 in threaded engagement with said posts serve to clampboth collars together, the pump mechanism being thus firmly attached tothe tank portion. A washer 15, of suitable material, is preferablyinterposed between collars 4 and 5 to hermetically seal the opening ofthe tank. A plate 7, fastened to collar 5, preferably by screws, has atits center an opening 8, serving as a guide for the plunger-rod 9. Apost or projection 10, preferably cast integral with plate 7, engages anopening 11 in the base-wall of a stirrup-shaped plunger-handle 1 2,thusrigidly and not flexibly securing the handle to the plate,a hole 13through said post accommodatinga key or pin 14., said pin serving tolock said handle to plate 7, as best shown in Fig. 6. The plunger-rod 9is preferably in threaded engagement with said handle. It is readilyseen that the handle may serve either as a means for actuating theplunger of the pump or, in conjunction with the post 10, carried by thecylinder 6, as a means for readily inserting the pump within andremoving it from the tank, or it may serve as a handle to the Wholeapparatus, in which last two cases said handle is rigidly locked to thepump-frame, as before described. The pump-cylinder 6 extends down intothe tank and terminates in check-valve mechanism. A plate 16, securelyfastened into the cylinder, has a central opening or port 17, the wallsof which extend to form a seat 18 for the check-valve, which consists inits preferred embodiment of a valve-stem 19, a metallic disk 20, and awasher 21, preferably of rubber. A collar 22, preferably integral withthe valve-stem, forms a seat for disk 20, said disk serving to reinforcethe washer 21, said washer being interposed between said disk and thevalve-seat being held against said seat by a leaf-spring 23. Thisleafspring is preferably of the shape shown in Figs. 3 and 5, its endsbeing reduced to form tongues 24, adapted to engage slots 25 in thepump-cylinder. An opening 26 in the center of said spring is in bearingengagement with collar 22 on the valvestem, said stem passing throughsaid opening. I preferably make the bearing-face of said collar of aconvex shape and bevel the walls of the opening 26 for engaging saidconvex surface. This provides a rocking bearing between the spring andthe valve and insures at all times the pressure of the spring upon thecentral portion of the valve. This form of valve mechanism is certain ofaction and easily removed and assembled. The plunger-valve is of theordinary type, the air passing through an opening 27 upon the upstrokeof the piston. A discharge-tube 28 passes from the outlet 20 to thebottom of the tank and into the liquid, at stop-cock 30 being preferablyinterposed in the outlet-pipe 29,

to which may be attached a hose and suitable spraying means. Asafety-valve to guard against bursting of the tank or other accidentsconsists in its preferred embodiment of a bushing 31, secured in thetank-wall and threaded to receive a cap 32, said cap being provided withan opening 33, adapted to form a continuation of the opening in thebushing. The diaphragm, which may be of thin sheet-copper, is clampedover the opening in the bushing 31 by means of the cap 32 and uponbursting may be readily replaced by another diaphragm.

As hereinbefore stated, I preferably make the tank of slender shape andthe operator can readily suspend the tank in a horizontal position fromhis shoulder by means ofastrap, which preferably fastens to eyes 34,secured to the tank.

As changes in my invention may be readily made without departing fromthe spirit thereof, I do not wish to be limited to the preciseconstruction set forth; but,

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination with a pressure-tank for receiving and dischargingfluid,of a pumpcylinder having engagement with the said pressure-tank, apiston adapted to be reciprocated within the pump-cylinder, a pistonrodextending from the piston, a handle secured to the piston-rod, and meansfor rigidly engaging the handle with the pump-cylinder, whereby thepump-cylinder may be readily inserted within and removed from thepressure-tank, and whereby the handle may be maintained close to thepump-cylinder to enable the entire apparatus to be readily carried,substantially as described.

2. The combination with a pressure-tank for receiving and dischargingfluid,ofa-pumpcylinder having clamping engagement with the saidpressure-tank, a piston adapted to be reciprocated within thepump-cylinder, a piston-rod extending from the piston, a handle securedto the piston-rod, the said handle being stirrup-shaped and providedwith a base extending transversely to the piston of the pump, the saidbase being provided with an aperture eccentric to the piston-rod, and apost 10 adapted to project through the said aperture, whereby thepump-cylinder may be engaged or disengaged from the tank, substantiallyas described.

3. The combination with a pressure-tank for receiving and dischargingfluid,of a pumpcylinder having clamping engagement with the saidpressure'tank, a piston adapted to be reciprocated within thepump-cylinder, a piston-rod extending from the piston, a handle securedto the piston-rod, the said handle being stirrup-shaped and providedwith a base extending transversely to the piston of the pump, the saidbase being provided with an aperture eccentric to the piston-rod, and apost 10 adapted to project through the said aperture, and the said postbeing provided with a hole and a pin or key adapted for insertionthrough said hole in the post, whereby the apparatus may be readilycarried, substantially as described.

4. In a spraying device, the combination with a pressure-tank forcontaining liquid to be subjected to pressure, of a pump for forcing airunder pressure into the said tank, a bushing secured in the wall of thetank, a safety-diaphragm closing the bushing and a clamping-cap forsecuring the safetydiaphragm in place, the said cap being provided withan opening adapted to form a continuationof the opening in the bore ofthe bushing when the said safety-diaphragm is broken, substantially asdescribed.

In witness whereof I hereunto subscribe my name this-15th day ofFebruary, A. D. 1900.

EDWD. 0. BROWN.

Witnesses:

J. B. KILEY, FAHY GALLIGAN.

